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在盆栽条件下,研究了花期调亏灌溉对大豆生长发育和产量的影响。结果表明花期不同强度、不同时间调亏处理对株高、叶面积、根重、产量、根冠比等均有影响,且不同品种性状表现差异各异。耗水量随着控水强度加大、控水时间延长而降低,水分利用效率也变化明显,其中7d中度控水处理WUE最高。随着控水强度和控水时间的延长,经济系数有逐渐增大的趋势。综合上述研究,辽51064和辽51095均以7d中度调亏处理(土壤含水量为19%~21%)为适宜。品种抗旱方面,辽51095的抗旱性优于辽51064。
Under potted condition, the effects of anthesis deficit irrigation on soybean growth and yield were studied. The results showed that different intensity of flowering stage and different times of deficit treatment had effects on plant height, leaf area, root weight, yield, ratio of root and shoot, and the performance of different varieties had different performance. The water consumption decreased with the increase of water control intensity and water control time, and the water use efficiency also changed obviously. Among them, the water control efficiency was the highest in 7 days. With the control of water intensity and water control time, economic coefficient has gradually increased. Based on the above studies, both Liao 51064 and Liao 51095 were suitable for 7d medium-scale deficit treatment (soil moisture 19% ~ 21%). Drought resistant varieties, Liaoning 51095 drought resistance is better than Liao 51064.